My wife and I were in San Antonio in December. We had heard of the various caverns north of the city and wanted to visit one. Not sure why we chose this one but I am glad we did. There were only the two of us there but they took us down anyway. The lady who led the tour was very knowledgeable and professional. She took us through the requisite safety info and warnings ahead of time. In the cave she took the time to point out all the wonderful things happening down there, from wildlife (bats, frogs etc) to the different types of formations that minerals form over many years. We had a wonderful time. At the end we realized the tour went over time by about 15 minutes but we didn't mind and neither did she.